refactor(z5): extract shared artistic styles

3 files changed, 103 insertions, 72 deletions

diff --git a/internal/image/openai.go b/internal/image/openai.go
index f2db41d..1df6eb7 100644
--- a/internal/image/openai.go
+++ b/internal/image/openai.go
@@ -244,78 +244,8 @@ func (c *OpenAIClient) createEducationalPrompt(ctx context.Context, bulgarianWor
 		scene = ""
 	}
 
-	// Define artistic styles
-	styles := []string{
-		"Photorealism", "Hyperrealism", "Surrealism", "Impressionism",
-		"Minimalism", "Pop Art", "Art Nouveau", "Digital Art",
-		"Watercolor", "Oil Painting", "Pencil Sketch", "Ink Drawing",
-		"3D Rendering", "Low Poly Art", "Pixel Art", "Vector Art",
-		"Collage", "Mixed Media", "Contemporary Art", "Abstract Expressionism",
-		"Cubism", "Pointillism", "Fauvism", "Art Deco",
-		"Baroque", "Renaissance", "Romanticism", "Realism",
-		"Post-Impressionism", "Expressionism", "Constructivism", "Suprematism",
-		"Dadaism", "Futurism", "Op Art", "Kinetic Art",
-		"Street Art", "Graffiti Art", "Installation Art", "Land Art",
-		"Conceptual Art", "Performance Art", "Video Art", "Net Art",
-		"Generative Art", "Algorithmic Art", "Fractal Art", "Glitch Art",
-		"Vaporwave", "Synthwave", "Cyberpunk", "Steampunk",
-		"Fantasy Art", "Science Fiction Art", "Horror Art", "Gothic Art",
-		"Anime", "Manga", "Comic Book Art", "Cartoon",
-		"Caricature", "Editorial Illustration", "Children's Book Illustration", "Fashion Illustration",
-		"Architectural Rendering", "Technical Illustration", "Scientific Illustration", "Medical Illustration",
-		"Botanical Illustration", "Zoological Illustration", "Astronomical Art", "Paleoart",
-		"Infographic", "Data Visualization", "Typography Art", "Calligraphy",
-		"Mosaic", "Stained Glass", "Tapestry", "Embroidery",
-		"Sculpture", "Ceramics", "Pottery", "Glass Art",
-		"Metalwork", "Jewelry Design", "Woodcarving", "Paper Art",
-		"Origami", "Kirigami", "Quilling", "Book Art",
-		"Photography", "Documentary Photography", "Portrait Photography", "Landscape Photography",
-		"Macro Photography", "Aerial Photography", "Underwater Photography", "Astrophotography",
-		"Film Noir", "Vintage Photography", "Polaroid", "Double Exposure",
-		"HDR Photography", "Long Exposure", "Tilt-Shift", "Infrared Photography",
-		"Monochrome", "Sepia Tone", "Cross-Processing", "Cyanotype",
-		"Folk Art", "Outsider Art", "Naive Art", "Aboriginal Art",
-		"African Art", "Asian Art", "Islamic Art", "Celtic Art",
-		"Byzantine Art", "Medieval Art", "Pre-Columbian Art", "Ancient Egyptian Art",
-		"Ancient Greek Art", "Ancient Roman Art", "Cave Painting", "Petroglyphs",
-		"Bauhaus", "De Stijl", "Vienna Secession", "Arts and Crafts Movement",
-		"Prairie School", "International Style", "Brutalism", "Deconstructivism",
-		"Parametric Design", "Biomimicry", "Sustainable Design", "Universal Design",
-		"Retro Futurism", "Dieselpunk", "Atompunk", "Biopunk",
-		"Afrofuturism", "Solarpunk", "Post-Apocalyptic", "Dystopian Art",
-		"Psychedelic Art", "Visionary Art", "Lowbrow Art", "Outsider Art",
-		"Trompe-l'oeil", "Anamorphic Art", "Optical Illusion", "Impossible Objects",
-		"Sacred Geometry", "Mandala", "Yantra", "Celtic Knots",
-		"Stippling", "Hatching", "Cross-Hatching", "Scumbling",
-		"Impasto", "Glazing", "Scumbling", "Sgraffito",
-		"Encaustic", "Fresco", "Tempera", "Gouache",
-		"Pastel", "Charcoal", "Conte", "Silverpoint",
-		"Linocut", "Woodcut", "Etching", "Lithography",
-		"Screen Printing", "Monotype", "Collagraph", "Digital Print",
-		"Augmented Reality Art", "Virtual Reality Art", "Interactive Art", "Projection Mapping",
-		"Light Art", "Neon Art", "Holographic Art", "Laser Art",
-		"Sound Art", "Bio Art", "Eco Art", "Social Practice Art",
-		"Relational Aesthetics", "Participatory Art", "Community Art", "Activist Art",
-		"Feminist Art", "Queer Art", "Postcolonial Art", "Decolonial Art",
-		"Metamodernism", "Post-Internet Art", "Post-Digital Art", "New Aesthetic",
-		"Speculative Design", "Critical Design", "Design Fiction", "Adversarial Design",
-		"Transitional Design", "Transformation Design", "Service Design", "Experience Design",
-		"Slow Design", "Emotional Design", "Inclusive Design", "Regenerative Design",
-		"Biophilic Design", "Cradle to Cradle", "Circular Design", "Zero Waste Design",
-		"Modular Design", "Open Design", "Co-Design", "Participatory Design",
-		"Flat Design", "Material Design", "Neumorphism", "Glassmorphism",
-		"Maximalism", "Eclecticism", "Kitsch", "Camp",
-		"Wabi-Sabi", "Hygge", "Lagom", "Ikigai",
-		"Feng Shui", "Vastu Shastra", "Sacred Architecture", "Organic Architecture",
-		"Vernacular Architecture", "Adaptive Reuse", "Green Architecture", "Living Architecture",
-		"Kinetic Architecture", "Responsive Architecture", "Parametric Architecture", "Algorithmic Architecture",
-		"Blob Architecture", "Deconstructivist Architecture", "High-Tech Architecture", "Neo-Futurism",
-		"Critical Regionalism", "Tropical Modernism", "Desert Modernism", "Scandinavian Design",
-		"Japanese Design", "Italian Design", "German Design", "Dutch Design",
-		"Memphis Group", "Radical Design", "Anti-Design", "Superstudio",
-		"Archigram", "Metabolism", "Structuralism", "Postmodernism",
-		"Minimalist Photography", "Conceptual Photography", "Staged Photography", "Candid Photography",
-	}
+	// Copy the shared styles before shuffling so the package-level list stays stable.
+	styles := append([]string(nil), ArtisticStyles...)
 
 	// Shuffle the styles to avoid bias
 	rand.Shuffle(len(styles), func(i, j int) {
diff --git a/internal/image/styles.go b/internal/image/styles.go
new file mode 100644
index 0000000..a88bb69
--- /dev/null
+++ b/internal/image/styles.go
@@ -0,0 +1,74 @@
+package image
+
+// ArtisticStyles contains the shared pool of artistic styles used for image prompts.
+var ArtisticStyles = []string{
+	"Photorealism", "Hyperrealism", "Surrealism", "Impressionism",
+	"Minimalism", "Pop Art", "Art Nouveau", "Digital Art",
+	"Watercolor", "Oil Painting", "Pencil Sketch", "Ink Drawing",
+	"3D Rendering", "Low Poly Art", "Pixel Art", "Vector Art",
+	"Collage", "Mixed Media", "Contemporary Art", "Abstract Expressionism",
+	"Cubism", "Pointillism", "Fauvism", "Art Deco",
+	"Baroque", "Renaissance", "Romanticism", "Realism",
+	"Post-Impressionism", "Expressionism", "Constructivism", "Suprematism",
+	"Dadaism", "Futurism", "Op Art", "Kinetic Art",
+	"Street Art", "Graffiti Art", "Installation Art", "Land Art",
+	"Conceptual Art", "Performance Art", "Video Art", "Net Art",
+	"Generative Art", "Algorithmic Art", "Fractal Art", "Glitch Art",
+	"Vaporwave", "Synthwave", "Cyberpunk", "Steampunk",
+	"Fantasy Art", "Science Fiction Art", "Horror Art", "Gothic Art",
+	"Anime", "Manga", "Comic Book Art", "Cartoon",
+	"Caricature", "Editorial Illustration", "Children's Book Illustration", "Fashion Illustration",
+	"Architectural Rendering", "Technical Illustration", "Scientific Illustration", "Medical Illustration",
+	"Botanical Illustration", "Zoological Illustration", "Astronomical Art", "Paleoart",
+	"Infographic", "Data Visualization", "Typography Art", "Calligraphy",
+	"Mosaic", "Stained Glass", "Tapestry", "Embroidery",
+	"Sculpture", "Ceramics", "Pottery", "Glass Art",
+	"Metalwork", "Jewelry Design", "Woodcarving", "Paper Art",
+	"Origami", "Kirigami", "Quilling", "Book Art",
+	"Photography", "Documentary Photography", "Portrait Photography", "Landscape Photography",
+	"Macro Photography", "Aerial Photography", "Underwater Photography", "Astrophotography",
+	"Film Noir", "Vintage Photography", "Polaroid", "Double Exposure",
+	"HDR Photography", "Long Exposure", "Tilt-Shift", "Infrared Photography",
+	"Monochrome", "Sepia Tone", "Cross-Processing", "Cyanotype",
+	"Folk Art", "Outsider Art", "Naive Art", "Aboriginal Art",
+	"African Art", "Asian Art", "Islamic Art", "Celtic Art",
+	"Byzantine Art", "Medieval Art", "Pre-Columbian Art", "Ancient Egyptian Art",
+	"Ancient Greek Art", "Ancient Roman Art", "Cave Painting", "Petroglyphs",
+	"Bauhaus", "De Stijl", "Vienna Secession", "Arts and Crafts Movement",
+	"Prairie School", "International Style", "Brutalism", "Deconstructivism",
+	"Parametric Design", "Biomimicry", "Sustainable Design", "Universal Design",
+	"Retro Futurism", "Dieselpunk", "Atompunk", "Biopunk",
+	"Afrofuturism", "Solarpunk", "Post-Apocalyptic", "Dystopian Art",
+	"Psychedelic Art", "Visionary Art", "Lowbrow Art", "Outsider Art",
+	"Trompe-l'oeil", "Anamorphic Art", "Optical Illusion", "Impossible Objects",
+	"Sacred Geometry", "Mandala", "Yantra", "Celtic Knots",
+	"Stippling", "Hatching", "Cross-Hatching", "Scumbling",
+	"Impasto", "Glazing", "Scumbling", "Sgraffito",
+	"Encaustic", "Fresco", "Tempera", "Gouache",
+	"Pastel", "Charcoal", "Conte", "Silverpoint",
+	"Linocut", "Woodcut", "Etching", "Lithography",
+	"Screen Printing", "Monotype", "Collagraph", "Digital Print",
+	"Augmented Reality Art", "Virtual Reality Art", "Interactive Art", "Projection Mapping",
+	"Light Art", "Neon Art", "Holographic Art", "Laser Art",
+	"Sound Art", "Bio Art", "Eco Art", "Social Practice Art",
+	"Relational Aesthetics", "Participatory Art", "Community Art", "Activist Art",
+	"Feminist Art", "Queer Art", "Postcolonial Art", "Decolonial Art",
+	"Metamodernism", "Post-Internet Art", "Post-Digital Art", "New Aesthetic",
+	"Speculative Design", "Critical Design", "Design Fiction", "Adversarial Design",
+	"Transitional Design", "Transformation Design", "Service Design", "Experience Design",
+	"Slow Design", "Emotional Design", "Inclusive Design", "Regenerative Design",
+	"Biophilic Design", "Cradle to Cradle", "Circular Design", "Zero Waste Design",
+	"Modular Design", "Open Design", "Co-Design", "Participatory Design",
+	"Flat Design", "Material Design", "Neumorphism", "Glassmorphism",
+	"Maximalism", "Eclecticism", "Kitsch", "Camp",
+	"Wabi-Sabi", "Hygge", "Lagom", "Ikigai",
+	"Feng Shui", "Vastu Shastra", "Sacred Architecture", "Organic Architecture",
+	"Vernacular Architecture", "Adaptive Reuse", "Green Architecture", "Living Architecture",
+	"Kinetic Architecture", "Responsive Architecture", "Parametric Architecture", "Algorithmic Architecture",
+	"Blob Architecture", "Deconstructivist Architecture", "High-Tech Architecture", "Neo-Futurism",
+	"Critical Regionalism", "Tropical Modernism", "Desert Modernism", "Scandinavian Design",
+	"Japanese Design", "Italian Design", "German Design", "Dutch Design",
+	"Memphis Group", "Radical Design", "Anti-Design", "Superstudio",
+	"Archigram", "Metabolism", "Structuralism", "Postmodernism",
+	"Minimalist Photography", "Conceptual Photography", "Staged Photography", "Candid Photography",
+}
diff --git a/internal/image/styles_test.go b/internal/image/styles_test.go
new file mode 100644
index 0000000..8eeb7c1
--- /dev/null
+++ b/internal/image/styles_test.go
@@ -0,0 +1,27 @@
+package image
+
+import "testing"
+
+func TestArtisticStyles(t *testing.T) {
+	if len(ArtisticStyles) == 0 {
+		t.Fatal("ArtisticStyles should not be empty")
+	}
+
+	if !hasStyle(ArtisticStyles, "Photorealism") {
+		t.Fatal(`ArtisticStyles should include "Photorealism"`)
+	}
+
+	if !hasStyle(ArtisticStyles, "Candid Photography") {
+		t.Fatal(`ArtisticStyles should include "Candid Photography"`)
+	}
+}
+
+func hasStyle(styles []string, want string) bool {
+	for _, style := range styles {
+		if style == want {
+			return true
+		}
+	}
+
+	return false
+}